\begin{table}[tbhp] \centering {\begin{tabular}{l*{5}{c}}
\hline
                    &\multicolumn{1}{c}{2002}&\multicolumn{1}{c}{2003}&\multicolumn{1}{c}{2004}&\multicolumn{1}{c}{2005}&\multicolumn{1}{c}{2006}\\
\hline
emwch               &       5.596\sym{*}  &       0.461         &      -2.445         &       4.610         &      -10.37         \\
                    &       2.572         &       2.493         &       2.507         &       4.317         &       7.510         \\
Constant            &       156.5\sym{***}&       160.3\sym{***}&       162.4\sym{***}&       159.2\sym{***}&       174.5\sym{***}\\
                    &       1.884         &       1.862         &       2.080         &       4.068         &       7.376         \\
 \hline
N                   &        8065         &       10406         &       10705         &       10828         &        9240         \\
\hline
\end{tabular} } \end{table} 
